Okumura, Masayuki, Yoshitaka Nakashima, Primo Curti, and Waldomiro de Paula. 1974. “Acute Intestinal Obstruction by Ascaris. Analysis of 455 Cases”. Revista Do Instituto De Medicina Tropical De São Paulo 16 (5): 292-300. https://revistas.usp.br/rimtsp/article/view/201181.